Track-drilling machine.



C. B. GTES. *TRACK MILLING MAoHNg. APBMGATION FILLED smul?, 1912.

mentaal Nov. 24, i914;

l SHEETS-SHEET, l.

G. B.' GOATES. TRACK DRILLING MACHINE. APPLICATION FILED 17, 1912.

Patented NOV. 24, 1914.

4 SHEETSSHEET 2.

Y@ @wm G. B. OOATES. TK AGK-DRILLING MACHINE. APPLIGATON 'funn SEPT. 1:1, 1912.

1,1 ly, meme@ Nov. 24, 1914.

4 SHEETSAHEET a.

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yC. B. GOATES.

TRACK DRILLING MACHINE.

APPLIGAToN FILED SEPT.17, 1912.

l 18,26%. Patente@ Nov. 24, 1914,

4 SHEETS-SHEET 4.

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HARLES IB. COATES, OF CHICAGO. LLNOIS, ASSIGNOZYy TO CHICAGO PNEUMAiTIC TOOL COMPANY, OF CHICGG, ILLINOIS. A CORPORATION DF NEEV' JERSEYl TliitAC-DRILLING MACHINE.

Specification of .etters Patent.

l fl'atented Nov. 2113i, ljiet.

Application le September i?, E912. Serial No. 720,75?.

T all elf/wm, may concer/e. v

Be it lmovvnthat {li-rames B. Coarse, a citizen oi" the United States. residing at Chicago. in the county of (look and State ot' AIllinois` have invented certain new and useful lmproaements in riiaclrdrilling Machines, of which the following` is a sjfzecilicm tion.

My invention relates to what are known as track drilling machines, particularly adapted and larranged for drilling tie or joint holes, reaming joint holes, and also for drilling holes for rail bonding, although I contemplate usingmy invention Wherever applicable.

The object of my invention is to provide a simple and eilicient machine of this char` acter built for rapid wor; and adapted to be applied to and removed from the tra-oli in a simple and rapid manner7 being provided with means for feeding the drill to the Work and also for moving and adjusting the drill to different positions so as to drill at different heights. I

The 'arious features of advantage and utility in my construction of machine Will be apparent from the description hereinafter given.

In the drawings Figure l' is av perspective of my machine shown in connection with and applied to a track; Fig. 2 an end elen yration thereof.l lookingl from the inside ot' one of the rails. that is, with the right-hand rail in Fig. .l omitted; Fig. 3 a section on the line 3 2?) of Fig. el with a portion thereof broken away; Fig. 4 a plan view of the machine; Fig'. 5 a side elevation thereof;

(3 an end view oin` the guide rods entending transversely of the track; lfigra detail vien' of the feed screw construction, the same being a horizontal section on the line i`7 of Fig. 8; Fig. S a vertical section on the line 8 8 of Fig. 7: Figli a. detail View of a modified form of construction of hook for one end oic said guide rods; Fig'. l0 a plan view illustrating a clamp that may be used for he other end of the guide rods: Eig. ll a vertical section on the line lJ--ll 'ot' Fig. lO; and Fig. lf2 an end view ot the parts shown in Figs. l0 and ll.

Referring to the present embodiment of my machine as shown in the drawings. they same comprises tivo essential parts. the drill motor and its drill andthe supporting and guiding structure therefor, which by l preference are made detachable in the man` ner hereinafter explained in order lthat the drill motor may loe, if desired, lised for other purposes as an independent portable tool. he drill motor, which is indicated in general by the referencecharacteril,l mayv be ofany desired construction and character and may loe operated byeleotricity, compressed air or the like, asv usulal, for which reason illustration and description of its mechanism are unnecessary. n

To the casing of the drill motor is secured in suitable manner as by means of the screws 2a an inverted yoke encompassing the upper portion of the casing or body of the drill motor and provided on each side with a pair of vertical guide ribs 3. It will he understood that the drill'motor islprovided with a suitable drill or bit shown at l.

The supporting and giliding structure for the drill comprises a pair of similar rig t and left hand `frames each consisting' of a tubular portion 5 and a pair of vertical guides 6 with which the guide ribs 3 icooperate for vertical adjustment of the drill motor and drill. These tubulanportions 2' are fitted to and slide upon a pair of parallel rods 7 in the operation hereinafter described ot' the movement of the drill to the Work. .The frames are also provided with vertical portions 8 which are connected at theirtop by means of a cross piece or bar 9 secured thereto by the screws 9a and hav-4 ing a central opening. lVithin this open` ine is rotatably mounted a feed nut l0 con? stituting the tubular portion or hub of a hand operating wheel 1l. rlhis nut is held in place bv means of the clamping ringr and set screw -13 (Figs. Q and 3). This feed nut engages the vertical feed screw 1lwhich is secured at its lower end to the top side of the drill casina` with the'result that L when the adjusting.;` Wheel l1 is rotated in one direction or the other, the entire drill structure is raised or lowered accordingly. At the same time this adiusting mechanism constitutes the means for supporting the. drill uitnlgjn'the 'frames described. The tubular portions 5 ot these frames are connected by a cross piece or yoke 15 from which projects centrally thereof the feed screw i6. lVhile the tivo frames` including the portions 5 and the gruidesmav be ma de integral niththe Vyoke l5, I prefer to make them separate as shown to facilitate the ico Work of manufacture. T hisl screw .16 passes through the threaded central portion of a cross bar 17 Whose ends are tubular so as to fit upon the guide rods 7. This cross bar 17 is adapted to be held in diderent adljusted positions along the lengthl of these rods, and for this purpose these rods have a series oi vertical holes 7 at intervals and each of the tubular ends of the cross ba`r17 has a corresponding hole through each of which passes a pin 18 whereby such cross bar'is held in any desired position alon the length of the rods. The adjusting screw 16 is provided with a hand Wheel 19 for' operating the same. It will heunderstood that by turning this Wheel in one di-j rection or the other the drill motor and its immediate supporting 'frames are moved'to'- ward or away from the Work according to the direction of rotation of the Wheel@y In practice I prefer to attach thefeed screw 16 to the yoke 15 in the manner shown inv detail in Fig. 7, according to which the central part of the yoke is bored to receive the extended lreduced end 16'oi'the;feed screw, which is provided with circumferential Igroove'lvl?. The free Iends of a looped Wire' or roclf'ltic passthrough holes in the 'yoke and engage/said groovd'fwhereby the parts are to be ldrilled` lis-provided with'l a connecting or croz-isbarl 20f`having socketed ends 20rl to receiveisai'd rods, the parts being held together'inwsuitable manner as by means'of the setscreWQ'l. In addition each end of this crossibar 2O is provided with a depending portion 22 which' is adapted to hook over. the particular rail of the track being operated kvupon (Figs and 6). The other ends .of the rods 7' are connected by means oi the cross bar 23 having tubular end portions 23* tting upon said rods and secured thereto in suitable manner as by means ot tlie set screws V24; These particular ends of thelrods rest pponthetracli which is not being oper- 4atedupon and according to my particular construction' novvl eing described themachine is held in lace u on the track .at this end by the weight of t e operator who sits upon the seat 25 ,secured near said end' of the rod 7 in suitable'manner and in rear of the drill motor, advantage beingtaken'ot 'thefact that the operator would naturally sit down at this oint in the performance of his work. As s own, the seat is provided with dependa straps 26 upon the rod 7. Thelocation o the seat' corresponds to the most convenient one for the operator in operating the feed of` the drill.

"fIn o eration the machine is applied to the Y .track y hooking overthe proper ends oi' the rodsj. upon: the rail to be drilled and resting the other ends of the rods' upon the 1,1 rases other rail. The drill is then adjusted vertically if necessary for the yproper height or position of the hole and the drill started and fed to the Work by operation of .the hand wheel 19, it being understood that the operator sits upon the seat 25 andkeeps the machine down in lace upon the track. After the hole is dril ed, the drill or bit can be Withdrawn' by turning the feed wheel in the reverse direction, or, if desired, the pins 18 can be removed and the drill and its supporting frames rapidly Withdrawn by sliding thenrupqn the rods 7.

l/Vhen the. rails are sufiiciently secured in place on the road bed so that they will not tip when operated upon by the drilling madrill rails which are not yet secured in position, with the result that when the drilling machine has these short hooks there is a liability of tipping of the rail whenl operated upon. To meet this contingency I provide the elongated hooks 22, as shown in Fig. 9, the same having a vertical portion extending downwardly parallel with the web of the rail and a horizontal inturned portion adapted to contract such web at a point approximating the middle portion thereof as to height, so that any tendency of therail to tip or cant is eiictually overcome.

While it may be suiiicient, as hereinbefore described. to merely rest one end of the guide rods upon the rail not being drilled and to have the operator sit upon the seat provided, if desired means may be provided for clamping such end of the rods to said rail, such means to be employed with or without the seat or equivalent device, as may be preferred. I have shown in' Figs. 10 to 12 a desirable clamping means of this character. As shown, I extend the guide rods some distance beyond the rail not being drilled and fit thereupon a cross piece or bar 27 having tubular ends 27 which slidably fit upon'said rods and are secured thereto in suitable manner, as by means of which is similar, with the exception-that the 'same'is adapted to freely slide upon th`e rods, and is not adapted to be secured thereto in any adjusted position, as is the case with the cross bar 27. This cross bar 29 is held toward the cross bar 27 With a. yielding pressure as by means of the coil springs 20. The cross bar 29 is provided toward its ends at a point adj aeent its tubular portions 29a with depending angular hooks or fingers 29b which extend toward the rail and are adapted to engage the same, as clearly shown in Fig. 11. In order to project said hooks toclamping position AandIto hold them in such position, suitable means may be employed, sucti'asthe circular can; 3l pivotally Vmoiuited @it 82 between 'the two bearing lugs 22 of the cross bar 2T. Thiscam is provided with an operating lever 33 secured thereto at its lower end, with the result that when the lever is operated it rotates and forces the cam 3l against/ the intermediate horizontal portion of the cross bar 29, so

.that the clamping hooks 29 are forced .against and retained in engagement with the rail, as described. The proper engagement of these .hooks with a diii'erent cha-racter of rail is obtained by adjusting the cross clearlyin Fig. wherein the sleeve Q0 is' shown provided with bosses 20h and the sleeve 23 with bosses 23h. ln this manner perfect ahnenient of the drilling machine can be obtained, and the drill giused to drill perfectly at right angles through the web of the rail and moreover these flat bosses give a solid andirm bearing upon the rails for the suppor ling rods.

As hereinbefore stated, any particular construction and type of drill motor 'may be employed, but in the present instance the same is of a type operated by electricity, which is desirable when the machine is being employed on traction roads where a supply of electricity is available from the trolley wire. Consequently l have shown in some of the figures of. the drawings the electric supply cable 34 extending into the drill motor, in the present instance the'same passing centrally through the feed screw le.

The drill motor may be removed from the supporting frame by removing the four screws i and turning the bar i) a quarter turn, after which the drill motor is free to be slipped downwardly or permitted to drop from the frame, or, it desired. the iced nut i0 may be turned until the adjusting screw. 'i l is disengaged therefrom.

s clearly shown in the drawings the con- .truction and arrangement of the parts is sii/.ch that the center of gravity ot the drill and lirnme'is below the top line or plane of the rail which not only facilitates the handling of the machine but also materially improves its action. The greater `portion of the machine is suspended from and arranged` below the guide rods 7 and whether the drilling machine proper is at its highest position or not the center of gravityis not above the-top plane of the rail. Furthermore l have so constructed my machine that l am enabled to bore holes at the lowest pos# sible point in the web of the rail without any interference between the drill body and a tie for instance, the lower' portion of the Ydrill body being free ofall parts that would otherwise interfere with this capability.

l. A track drilling machine comprising a drill motor and its'drill, a frame forsupporting and guiding the drill motor and .idapted to be supported upon the track, the center of gravity of the motor and frame being at of below the top line of the rail, and means for feeding the drill motor and drill to the work.

2. track drilling machine comprising a drill motor and its drill, a supporting and guiding struc-ture including rods adapted to rest upon and of a length to span the two rails of the track, and guide frames slidable on said rods and supporting the drill motor, the center of gravity of the motor and frame being at or below the top line of the rail, and means for feeding the drill motor to the work.

A trackdrilling machine comprising a drill'mo'tor and 'its drill, a supporting and guiding structurecomprising rods adapted to be supported by the track and guide frames slidable on said rodsand supporting the drill motor, a cross bar secured betweenthe rods, and a'ieed screw coperating with the bar and the frames for feeding the latter and the drill motor to the work.

i el. A track drilling machine comprising a drill motor and its drill, a supporting and guiding structurecomprising rods adapted to be supported by the track and guide frames slidable on said rods and supporting the drill motor, a cross bar secured to and arranged between the rods, and a feed screw eooperating with the bar and the frames for feeding the latter andthe drill motor to the work', said rods having means at one end for engaging a rail of the track.

A track drilling' machine comprising a drill motor and its drill. a supporting and guiding structure'comprising rods adapted to engage the track and guide frames slidable on said rods and supporting the drill motor, a cross bar secured to and arranged, between the rods and a feed screw coperating with the .bar and the trames for feeding the latter and the drill-motor and its drill to the work, said bar being adjustable to different positions on lthe rods.

(i. A track. drilling machine comprising a icc drill motor and. its drill, a' supporting and guiding structure comprising rods adaptedV to engage the track and guide frames slidable on said rods and supporting the drill motor, a cross bar having tubular ends iitted to slide upon the rods, said rods having along their length a series of holes.'pins for securing the bar to the rods at different positions thereon, and a feed screw coperating with the bar and with the frames'for feeding the latter and the drill motor and drill to the work.

7. A track drilling machine comprising a drill motor and its drill, a supporting, and

guiding structure Comprising rods adapted to engage the track and guide frames slidable on said rods and supporting the drill motor, a yoke 'connecting the frames, a cross bar Asecured between the rodsand having a central feed screw opening, and a feed screw passingl through said screw opening and engaging hthe yoke for feeding the frames and the drill motor and drill to the work.

8. A track drilling machine comprising,r a drill motor and its drill., a supporting and` guiding structure comprising rods adapted to be supported by the track and guide frames slidable on said rods and supporting the drill motor, a platform arranged upon therods and in rear of the drill motor and adapted to receive a removable weight, and means for feeding' the drill motor to the work, the drill being suspended from the Vrods with its center of gravity below the plane of said rods.

0. A track drilling machine comprisinga drill motor and its drill, afsupportinggr and guiding Astructure comprising rods i and guideframes slidable on said rods and-sup-` porting the drill motor, said rods having one end formed to hook over a rail of the track, a platform secured to the rods near their other ends and adapted to receive a removable weight, and means for feeding' the drill motor and drill to the work," the drill being suspended from'thc Yrods'with its center of gravity below the plane of said rods.

10. A track drilling machine comprising a drill motor and its drill, a supporting and guiding' structure comprising rods adapted to engage the track and guide framee-.sh'd able on said rods and supportingr the drill motor, said frames and drill motor having coperatiiier guiding means, an f. adiustine: screw coperatirnt,r with the frames and drill f for adiusting the positioniof the drill, and means for feediig the drill .motor and drill to the work. -v

11. A track drillingr machine comprisingr a drill motor and its drill. a supporting' and guiding structure comprising' rods` adapted to engage the track and guide frames slide able on said rods and supporting,lr the drill motor. said' drill motor havingr a casing'provided on each side with a pair of vertical guide ribs, and said frames beine; each pro-i vided with two vertical channels receiving nueces said ribs, and means for feeding the drill motor and drill to the work including a cross bar connecting1 said frames and provided with a central opening, a feed nut therein, and a feed screw secured to the drill motor and engaged bv the nut.

'12* A track drilling machine comprising a drill motr and its drill, a supporting ahd guiding structure comprising` rods adapted to engage the track and guide frames slidable on said rods and supportingv the drill motor, a. yoke connecting the frames, a cross 'bar secured between the rods and having a central feed screw opening, and a feed screw passing through said screw opening' and engaging the yoke for feeding the frames and the drill motor and drill to the work,

said screw being removably secured to said yoke.

13: A track drilling' machine comprising a drill motor and its drill, a supporting and guiding structure comprising rods adapted to engage the track aiid guide frames slidable on said rods nand supportingr the drill motor, a yoke connecting the frames and having@r a. central opening, a feed screw having an unthreaded end received by said opening, means for securingr such end therein, and a cross bar secured between the rods and havinga central opening fer the feed screw.

lll. A track drilling machine comprising' a drill motor and its drill, a supporting and guiding structure' therefor, including rods adapted to rest upon ,andspan the tivo rails of the track, meanstat one end 'of the rods for engagingga. rail, and clamping mechanism at the,v other end of the rods for enga ging the other rail comprisingr a movable clamping ngerslidable on thev rods and adapted to engage the rail. and a manually operatedI device for operatingT the same.

15. A track drilling machine comprisingr -a drill motor and its drill, a 'supporting and guiding structure thereforiincluding rods .adapted to rest upon and spanthe two'rails of the track-means at one end of the rods for engaging a rail and clamping mechanism at the other end of the rods for engaging the other rail comprising a cross bar slidable on said rods and having a clamping finger adapted to engage the rail, a second cross bar secured to the rods. and a cam mounted on the latter bar and adapted to contact the first bar and force its finger`v against the rail.

' i CHARLES B. COATES. Witnesses:-

S. E. Hmmm, ROBERT DOBBERMAN.

lOU 

